Tempers flared after the Blues equalised through a controversial late penalty at the end of Saturday’s match at Stamford Bridge, with Ramires deemed to have been felled by Steven Reid before Eden Hazard fired home from the spot.

Mourinho, who told the media after the game that “there are no doubts” it was a penalty, is reported to have told the West Brom players -- as he stated in his news conference -- that their second goal should have been disallowed for a foul on Branislav Ivanovic in the tunnel.

According to the Telegraph, that prompted “a confrontation involving almost 20 players” as Sweden defender Olsson told Mourinho: “Shut up and f--- off.”

The Blues boss then reportedly made his “Mickey Mouse” remark, with Gareth McAuley and another, unnamed player then said to have confronted the Portuguese before teammates calmed them down.

The Wolverhampton-based Express & Star newspaper also reported the altercation, and said defender Liam Ridgewell was “involved in an angry exchange with a steward who prevented him leaving the dressing-room area to head for the team coach”. Assistant boss Kevin Keen, meanwhile, had “a more light-hearted disagreement with a different steward who stopped him entering the referee’s room to speak to [referee Andre] Marriner.”

West Brom boss Steve Clarke -- Mourinho’s former assistant at Stamford Bridge -- described himself as “flabbergasted” by the decision afterwards, but has called on his team to move on.

“We had the three points in the palm of our hand and it was taken away quite cruelly, so I’m angry, frustrated and sad for my team because they deserved to break another hoodoo,” he said.

“I don’t think you can linger or look back for too long. We have to just move on, take all the good bits from this game and move on to what should be a good derby against Villa. Referees are human and I’m not one for criticising them but I hope over the course of the season we get our fair share of decisions.”